A Rowland rign of mean radius 18cm has 3...

A Rowland rign of mean radius `18cm` has `3500` turns of wire wound on a ferromagnetic core of relative permeability `800`. What is the magnetic field in the core for a magnetising current of `1*2amp`.?

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Verified by Experts

The correct Answer is:

`3*73T`

Use `B=mu_0mu_rni=mu_0mu_r(N)/(2pir)I`

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